src/gallium/drivers/softpipe/sp_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "util/u_memory.h"
  30 #include "util/u_simple_screen.h"
  31 #include "pipe/internal/p_winsys_screen.h"
  32 #include "pipe/p_defines.h"
  33 #include "pipe/p_screen.h"
  34
  35 #include "sp_texture.h"
  36 #include "sp_winsys.h"
  37 #include "sp_screen.h"
  38
  39
  40 static const char *
  41 softpipe_get_vendor(struct pipe_screen *screen)
  42 {
  43    return "VMware, Inc.";
  44 }
  45
  46
  47 static const char *
  48 softpipe_get_name(struct pipe_screen *screen)
  49 {
  50    return "softpipe";
  51 }
  52
  53
  54 static int
  55 softpipe_get_param(struct pipe_screen *screen, int param)
  56 {
  57    switch (param) {
  58    case PIPE_CAP_MAX_TEXTURE_IMAGE_UNITS:
  59       return PIPE_MAX_SAMPLERS;
  60    case PIPE_CAP_MAX_VERTEX_TEXTURE_UNITS:
  61       return PIPE_MAX_SAMPLERS;
  62    case PIPE_CAP_NPOT_TEXTURES:
  63       return 1;
  64    case PIPE_CAP_TWO_SIDED_STENCIL:
  65       return 1;
  66    case PIPE_CAP_GLSL:
  67       return 1;
  68    case PIPE_CAP_ANISOTROPIC_FILTER:
  69       return 0;
  70    case PIPE_CAP_POINT_SPRITE:
  71       return 1;
  72    case PIPE_CAP_MAX_RENDER_TARGETS:
  73       return PIPE_MAX_COLOR_BUFS;
  74    case PIPE_CAP_OCCLUSION_QUERY:
  75       return 1;
  76    case PIPE_CAP_TEXTURE_MIRROR_CLAMP:
  77       return 1;
  78    case PIPE_CAP_TEXTURE_MIRROR_REPEAT:
  79       return 1;
  80    case PIPE_CAP_TEXTURE_SHADOW_MAP:
  81       return 1;
  82    case PIPE_CAP_MAX_TEXTURE_2D_LEVELS:
  83       return 13; /* max 4Kx4K */
  84    case PIPE_CAP_MAX_TEXTURE_3D_LEVELS:
  85       return 9;  /* max 256x256x256 */
  86    case PIPE_CAP_MAX_TEXTURE_CUBE_LEVELS:
  87       return 13; /* max 4Kx4K */
  88    case PIPE_CAP_TGSI_CONT_SUPPORTED:
  89       return 1;
  90    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
  91       return 1;
  92    default:
  93       return 0;
  94    }
  95 }
  96
  97
  98 static float
  99 softpipe_get_paramf(struct pipe_screen *screen, int param)
 100 {
 101    switch (param) {
 102    case PIPE_CAP_MAX_LINE_WIDTH:
 103       /* fall-through */
 104    case PIPE_CAP_MAX_LINE_WIDTH_AA:
 105       return 255.0; /* arbitrary */
 106    case PIPE_CAP_MAX_POINT_WIDTH:
 107       /* fall-through */
 108    case PIPE_CAP_MAX_POINT_WIDTH_AA:
 109       return 255.0; /* arbitrary */
 110    case PIPE_CAP_MAX_TEXTURE_ANISOTROPY:
 111       return 16.0; /* not actually signficant at this time */
 112    case PIPE_CAP_MAX_TEXTURE_LOD_BIAS:
 113       return 16.0; /* arbitrary */
 114    default:
 115       return 0;
 116    }
 117 }
 118
 119
 120 /**
 121  * Query format support for creating a texture, drawing surface, etc.
 122  * \param format  the format to test
 123  * \param type  one of PIPE_TEXTURE, PIPE_SURFACE
 124  */
 125 static boolean
 126 softpipe_is_format_supported( struct pipe_screen *screen,
 127                               enum pipe_format format,
 128                               enum pipe_texture_target target,
 129                               unsigned tex_usage,
 130                               unsigned geom_flags )
 131 {
 132    assert(target == PIPE_TEXTURE_1D ||
 133           target == PIPE_TEXTURE_2D ||
 134           target == PIPE_TEXTURE_3D ||
 135           target == PIPE_TEXTURE_CUBE);
 136
 137    switch(format) {
 138    case PIPE_FORMAT_L16_UNORM:
 139    case PIPE_FORMAT_YCBCR_REV:
 140    case PIPE_FORMAT_YCBCR:
 141    case PIPE_FORMAT_DXT1_RGB:
 142    case PIPE_FORMAT_DXT1_RGBA:
 143    case PIPE_FORMAT_DXT3_RGBA:
 144    case PIPE_FORMAT_DXT5_RGBA:
 145    case PIPE_FORMAT_Z32_FLOAT:
 146       return FALSE;
 147    default:
 148       return TRUE;
 149    }
 150 }
 151
 152
 153 static void
 154 softpipe_destroy_screen( struct pipe_screen *screen )
 155 {
 156    struct pipe_winsys *winsys = screen->winsys;
 157
 158    if(winsys->destroy)
 159       winsys->destroy(winsys);
 160
 161    FREE(screen);
 162 }
 163
 164
 165
 166 /**
 167  * Create a new pipe_screen object
 168  * Note: we're not presently subclassing pipe_screen (no softpipe_screen).
 169  */
 170 struct pipe_screen *
 171 softpipe_create_screen(struct pipe_winsys *winsys)
 172 {
 173    struct softpipe_screen *screen = CALLOC_STRUCT(softpipe_screen);
 174
 175    if (!screen)
 176       return NULL;
 177
 178    screen->base.winsys = winsys;
 179
 180    screen->base.destroy = softpipe_destroy_screen;
 181
 182    screen->base.get_name = softpipe_get_name;
 183    screen->base.get_vendor = softpipe_get_vendor;
 184    screen->base.get_param = softpipe_get_param;
 185    screen->base.get_paramf = softpipe_get_paramf;
 186    screen->base.is_format_supported = softpipe_is_format_supported;
 187
 188    softpipe_init_screen_texture_funcs(&screen->base);
 189    u_simple_screen_init(&screen->base);
 190
 191    return &screen->base;
 192 }